A&P
The T-tubules
An action potential interest the depths of a mess of fiber by the way ————-
Troponin
As a calcium ions flood the sarcoplasmic they will blind to the ———— of the thin filaments
Twitch
Caused by a stimulus a quick cycle of contraction and relaxation is called a —————
Heat
Single muscle contraction requires energy to do work muscles help maintain our body —————
Finely controlled
Smaller motor units with you or muscle fibers partner on produce ———- muscle contractions
ATP
The absence of ————— would prevent the myosin head from detaching from the thin filament
Cross bridge
The attachment of the myosin head and then film it forms a ————-between the two filaments
Relax
When the frequency is progressively higher the muscle does not have time to ————
Which of the following is a true statement regarding muscle strength and conditioning check all that apply
1 weightlifting does not increase the number of muscle fibers in a particular muscle exercise 2. blood capillaries densely density will increase in slow twitch fibers in response to training for a marathon 3. long-term resistance training will increase the number of Myofibrils in a particular muscle exercise 4. a muscle fiber become too large mitosis causes them to divide into 2
Thigh
And example of a large motor unit would be in the ———— muscles
Eye
And example of a small motor unit would be in the ————- muscles
Actin
Areas of sarcolemma are electrically excited causing ———— potentials in all directions from the neuromuscular junction
Troponin
Cassie am I on (Ca2+) bind to ———- which is bound to the thin filaments
True
Each myosin pro Tien has a guy popular had that extends outward from the myosin filament
Length
Finally the muscle fiber returns to its resting ——————
Sarcoplasm
First a wave of action potential spreads from the end plate in all directions reaching the T tubules then the —————-
ACh receptor
Gated ion channel that is activated by a ACH
Sodium ions
In response to this binding ———— move into the muscle fiber causing the membrane potential to rise
Powerful
Large motor units with more muscle fibers partner on produce ———— contractions of muscle
Summation
Since I single twitch cannot produce you spell muscle movement ————- is necessary
synaptic vesicles
Store ACh in the motor neuron
Sarcoplasmic reticulum
Stores calcium inside the muscle cell
Nervous stimuli
Summation is the addition of a multiple twitches achieved from rapid succession of ————-
Saroplasmic reticulum
Terminal cisternae are a structural feature of the organelle called the the ————-
Action potentials
The Ions excite the sarcolemma and initiate a wave voltage changes called ——————
Electrically excitable
When an ion channel opens in a muscle cells plasma membrane ions flew across the membrane altering potential because the sales are ———————
Excitation
—————- Is the process in which action potential and the nerve axon lead to action potentials in the muscle fiber
Contraction
—————- Is the step in which the muscle fiber develops tension and may be shorten
Tropomyosin
——————— Move back into position blocking active site and no more contractions can occur
Elastic
The thick and thin filaments are in line with each other by ———— filament composed of a pro Tien called Titian
Myosin
The tropomyosin molecule of the thin filament changes shape and exposes active sites for ———-heads to bind and begin the contraction
Power
The ————stroke then pushes the myosin head forward moving the thin filaments across
T tubules
These voltage changes spread in all directions and passed down into the ———— exciting the muscle
Synaptic cleft, sarcolemma
This Nero transmitter diffusers across the ————— before binding to receptors of the —————-
Each actin filament is composed of
Two strands of Acton molecules wrapped together
Sphincters
Using ————- or valve muscles control the passage of contents from one body cavity or lumen to another
T tubule
In a muscle fiber the blank is adjacent to the terminal cisternae name so the action potential can stimulate calcium ion channels
Recovery
Once more ATP bind myosin head forward-moving and hydrolyze another ATP called the ———- stroke
Motor unit
One motor neuron and all of the muscle fiber supplied by it is called a —————-
Sarcolemma
The specific name for a muscle fibers plasma membrane is the —————
Twitch
A quick cycle of contraction and relaxation of the muscle is called a —————
Tropomyosin
A thin filaments consist of two intertwined chains of Actin molecules smaller filamentous ————- molecules and troponnin
Millivolts
Membrane potential is measured in the —————-
Polarized , anions
A cell membrane is ————- when there is a higher concentration of cations on one side and a higher concentration a —————- on the other
Myosin , Acton filaments
A confirmational change to troponin-tropomyosin reveals binding sites for ————- located on the ——————
Acetylcholine
A nerve signal rise at the Synapse and stimulate synaptic vesicles to release ————- into the synaptic cleft
Myosin
A single ———- molecule consist of two intertwined polypeptides forming a twisted filamentous tail and a double globular head
Milliseconds
A twitch can last as little as seven —————-
Thick
A ———- filament consist of 2 to 500 meiosis and molecules bundle together with the heads projecting outward is a helical array
Receptor
Acetylcholine disassociate from it's ————and no new molecule of acetylcholine are released
gated ion channels
Acetylcholine receptors function as —————-
Receptors
Acetylcholine stimulates ————— on gated ion channels in the sarcolemma
Which two molecules linked together to form a cross bridge during muscle contraction choose to answers from the list below
Actin , myosin
Terminal cisternae
Action potential causing voltage gated calcium ion channels to open in the blank of the Sarcoplasmic reticulum
Calcium
Active transport pumps in the SR move ———- back into the cisternae
Tetanus
Add an even higher frequency the muscle exhibit a state of continual contraction called —————
Complete sentence with the correct word then direct a sentence into correct order
Complete sentence with the correct word then direct a sentence into correct order
Movement
Muscle functions in ————- of the head neck and limbs as well as propulsion of the contents through the digestive track
Stability
Muscles are so function and ———— by preventing unwanted movement as in maintaining posture
Acetylcholine (ACh)
Neurotransmitter released at the neuromuscular junction
Place a single word into each sentence and then arrange the sentence into a logical paragraph order to describe the process of excitation
Place a single word into each sentence and then arrange the sentence into a logical paragraph order to describe the process of excitation
Place a single word into each sentence to make it correct and then arrange a sentence into logical paragraph order describe the process of excitation contraction canceling
Place a single word into each sentence to make it correct and then arrange a sentence into logical paragraph order describe the process of excitation contraction canceling
*Acetylcholine
Relaxation begins when nerve signals quit stimulating the axon terminal for releasing —————
Endomysium
The connective tissue that surrounds each muscle fiber is called the ————-
Membrane potential
The difference in charge created by the ECF ions and the ICF ions is called the ——————
Active
The head extends to an expose ———- side on the thin filament
Tension
The muscle will eventually fatigue and the muscle ———— will then decline
ATP
The myosin had messed have a ———molecule down to it to initiate the process
No nucleotide
The myosin head is bound to blank when it is in the low energy confirmation and it's bound to the thin filament
ATP
The myosin head is bound to ——— when it is in the low energy confirmation and it's not bound to that then filament
No nucleotide
The myosin head is bound to ————- during the power stroke
ADP and Pi
The myosin head is bound to ————- when it is extended high energy confirmation
Acetylcholine
The nerve signals stimulates the release of—————- into a synaptic cleft
Synapse
The process begins with a Nerve signal reaching the ——————
Active transport
The pump mechanism that maintains the resting membrane potential is an example of ——————
Treppe
With moderately frequent stimulation muscle relaxes fully between contraction but successive twitches are stronger a phenomenon known as ————
Glucose
By absorbing a large share of one's ———-muscles play in important role in blood sugar control
Terminal cisternae
Calcium channels in the ———- open and release calcium ions into the cytoskeleton
T-tubules
Carry the electrical signal (action potential) deep into the muscle cell
Click and drag each event into the appropriate category based on whether it would be associated with contraction or no contraction
Click and drag each event into the appropriate category based on whether it would be associated with contraction or no contraction contraction 1) Active transport of Ca2+ into the sarcoplasmic reticulum 2) A mutation to tropin to prevent it from binding to Ca 2+ 3)A mutation to tropomyosin that prevents it from binding troponin 4) And inhibitor a voltage gated Na+ channels contraction 1) Release of acetylcholine 2) A mutation to tropomyosin that prevents it from binding actin 3) Presence of an organophosphate pesticide that inhibits acetylcholinesterase
Myofilaments
Excitation contraction coupling refers to the events that link the action potentials on the sarcolemma to activation of the ————-
T-tubules
Excitation of a ———— membrane opens calcium channels into adjacent terminal cisternae of the sarcoplasmic reticulum
